Dow and the boy's mother — 23-year-old Jessica Linscott — fled to Florida rather than face police questioning after they brought the baby to the hospital.

Police say Dow struck the baby in the head so hard as to cause traumatic brain injury and seizures. Linscott is charged with multiple counts of child endangerment for allegedly failing to bring the boy in for treatment sooner.

Federal marshals apprehended Dow and Linscott at a Florida theme park last week.